This study used spiral computed tomography to identify the anterior loop of the inferior alveolar nerve, and to measure its length and position in Chinese. This information may be useful to safely install endosseous implants in the most distal area of the interforaminal region. Sixty-eight Chinese patients were included in this retrospective study. Patients were scanned by 64-slice spiral computed tomography, and the prevalence, length, and position of the anterior loop were assessed using the multiplanar capabilities of software. An anterior loop could be identified in 83.1 % of the cases, with a mean length of 2.09 mm (range 0–5.31 mm). The mean distance from the superior border of the mental foramen to the alveolar crest was 13.00 mm, and the mean distance from the superior border of the origin of the anterior loop to the alveolar crest was 17.83 mm. The anterior loop was highly prevalent in Chinese, and the length of the anterior loop was highly variable. Therefore, we recommend that drilling commences from a location approximately 5.5 mm mesially from the mental foramen, when installing implants in the most distal interforaminal area.

The prevalence, length and position of the anterior loop of the inferior alveolar nerve in Chinese, assessed by spiral computed tomography.

The mental foramen and mental nerve are clinically important landmarks for clinicians across various disciplines including dentists, oral maxillofacial surgeons, emergency physicians and plastic and reconstructive surgeons. To minimize complications related to procedures in the vicinity of the mental foramen and nerve, knowledge of its anatomy and anatomical variations is cardinal to concerned clinicians. In this review, basic anatomy, procedural complications, hard and soft tissue relations, variations between population groups, asymmetry, accessory mental foramina and the use of various radiological modalities to determine the position of the mental foramen are reviewed to provide a more thorough understanding of this important landmark.

Finding the mental foramen.

To determine the approximate location, shape and dimensions of the mental foramen in African subjects using panoramic radiographs.

/pdf/mental-foramen-size-position-and-symmetry-in-a-multi-ethnic-1oesnw1yp4.pdf

Mental Foramen Size, Position and Symmetry in a Multi-Ethnic, Urban Black Population: Radiographic Evidence

Introduction
The position of the mental foramen has been well researched in cadaver specimens, radiographically as well as intraoperatively. To our knowledge, this landmark study is the first to make use of ultrasonography in a study population to determine the position of the mental foramen in relation to the mandibular premolar teeth. Ultrasonography has great potential to further revolutionize the practice of medicine and dento-maxillofacial surgery.

pdf/the-ultrasonographic-determination-of-the-position-of-the-1mc22f3o0m.pdf

The Ultrasonographic Determination of the Position of the Mental Foramen and its Relation to the Mandibular Premolar Teeth.

Objective: Comparative evaluation of the location of mental foramen in different age groups. Determine the variation in position of mental foramen with gender using digital panoramic radiography. Materials and Methods: Digital panoramic radiographs of 250 patients were reviewed. The study population was divided into five age groups with 50 patients each. Radiographic position of mental foramen was evaluated in each radiograph based on three parameters. Measurements were taken in each radiograph using Planmeca Dimaxis pro version 4.4.0 (Helsinki, Finland). The collected data were subjected to statistical analysis using paired Student's t-test. Results: The mean distance of position of mental foramen showed a significant variation within the five age groups. In the first group, female patients showed an increase in mean distance of mental foramen position in relation to three parameters. From the second to fifth groups, male patient showed an increase in the mean distance of mental foramen position. The first and fifth group showed a reduced mean distance of mental foramen position when compared to other age groups. Conclusion: This study concluded that the position of mental foramen varies with age. There was a gender-related variation in position of mental foramen within the population too.

Location of mental foramen using digital panoramic Radiography.

The most common position of mental foramen in the human mandible is apical to the second premolar. Literature reports that mental foramen lies either anterior to the first premolar or posterior to the first molar in only 1–2% of cases. A case with a rare variation in position of the mental foramen is presented here.

/pdf/a-variation-in-the-position-of-the-mental-foramen-a-case-2f8yav4yny.pdf

A Variation in the Position of the Mental Foramen: A Case Report

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A Variation in the Position of the Mental Foramen: A Case Report